Facebook Marketplace Price Calculator

1. Pick the item category so the right depreciation curve is used.
2. Enter the original price the item cost when new.
3. Enter its age in years, using decimals for months.
4. Choose the condition that honestly matches the item.
5. Read the suggested listing price and the quick-sale to patient-seller range.

A fair Facebook Marketplace price is the amount a used item sells for locally within a reasonable time, given its category, age and condition. It sits below the original retail price because used goods depreciate, and below the price of active comparable listings, which are asking prices rather than sold prices. Most used household items sell for 30 to 60 percent of their original cost. This calculator estimates that figure so you neither underprice and lose money nor overprice and let the listing sit.

The estimate is a starting point, not an appraisal. Local demand, brand, included accessories and seasonality all move the real number, which is why the tool also shows a range rather than a single figure.

Category retention starts from the fraction a nearly-new item keeps once it enters the used market, then decays each year toward a floor. Electronics drop fast; furniture, tools and auto parts hold value far longer. The condition factor then scales that value down for wear.

1. Retention = starting fraction x (1 minus annual decay) raised to the age in years, held above a category floor.
2. Condition factor: Like New keeps the full value, Good takes about 82 percent, Fair about 62 percent, Poor about 42 percent.
3. The suggested price is rounded to a clean number; the range spans roughly a fast-sale discount up to a patient premium.

Suppose you paid 800 dollars for a phone two years ago and it is in Good condition. Electronics start at about 70 percent retention and lose roughly 20 percent a year, so the age retention is 0.70 x 0.80 squared, which is 0.448. Good condition multiplies that by 0.82, giving 0.367. Multiply by 800 and the suggested listing price is about 295 dollars, or 37 percent of the original price. The quick-sale price lands near 250 dollars and the patient price near 330 dollars, so you would list at 300 dollars and accept offers in that band.

Category and Depreciation Speed

Phones, laptops and TVs lose value quickly as newer models launch, while solid wood furniture, power tools and car parts hold value for years. Choosing the correct category is the single biggest driver of the estimate.

Condition and Completeness

A boxed item with all cables, manuals and accessories in Like New condition can command 20 to 40 percent more than the same item scuffed and incomplete.

Brand and Demand

Sought-after brands and models resell above the category average. Generic or discontinued items sell below it, regardless of age.

Local Supply and Season

Prices rise when few comparable items are listed nearby and fall when the market is flooded. Seasonal items such as heaters, bikes and patio sets peak in their season.

The prices you see on active Marketplace listings are asking prices, and many never sell at that number. Sold prices run lower.

Selling a Single Item Fast

Use the quick-sale price when you need cash or space quickly and do not want the listing to linger.

Clearing a Whole Home

Run each item to price a move-out or estate clear-out consistently instead of guessing item by item.

Buying on Marketplace

Reverse the logic as a buyer: if a listing sits far above the estimate for its age and condition, you have room to negotiate down.

1. Pricing at What You Paid

The purchase price is a sunk cost. Buyers pay todays used value, not what the item once cost you.

2. Copying Asking Prices

Matching the highest active listing usually means your item never sells. Anchor to sold prices instead.

3. Ignoring Condition Honestly

Overstating condition leads to no-shows and lowball offers once buyers see the item in person.

4. Leaving No Negotiation Room

Marketplace buyers expect to haggle. Price a little above your walk-away number so a discount still lands where you want.

This tool gives a defensible baseline from category depreciation and condition. It cannot see your exact local market, so always cross-check against recent comparable sales.

Most used household items sell for 30 to 60 percent of their original price. Electronics fall faster, while furniture, tools and auto parts hold value longer.

List near the quick-sale price this tool shows, which is about 15 percent below the suggested price. A slightly lower, clean number attracts more messages and faster pickups.

No. Buyers pay the current used value, not your purchase price. The amount you paid is a sunk cost and does not set the market.

Used goods depreciate the moment they leave the store, and buyers expect a discount for wear, missing warranty and no return option. That is why even Like New items sell below retail.

Yes. Moving from Like New to Fair typically cuts the value by a third or more, because buyers judge wear, missing parts and cosmetic damage closely in person.

Treat active listings as asking prices and a ceiling, and lean on sold or removed listings for the real market value. Cross-check both against this calculators baseline.

Yes. If a listing sits far above the estimate for its age and condition, you have evidence to negotiate the price down.

Price a little above your walk-away number, usually 10 to 15 percent, so a normal Marketplace discount still leaves you where you want to be.

No. The calculator runs entirely in your browser and nothing you enter is stored or sent anywhere.

• Facebook Marketplace listing guidance (Meta, Facebook Help Center).
• How depreciation reduces asset value (Investopedia).
• Consumer guidance on buying and selling used goods (US Federal Trade Commission).